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Who Is Sending Email As Your Company?

You might expect that the IT department or security team knows who's sending email using your company's domains. But for a variety of reasons these groups are often unaware of many legitimate senders -- not to mention all the bad actors. Fortunately you can get a more complete view by using DMARC's reporting features. How does it happen? Product teams managing a new product launch or customer survey hire marketing consultants and Email Service Providers (ESP)... more»

When DNSBLs Go Bad

I have often remarked that any fool can run a DNS-Based Blacklist (DNSBL) and many fools do so. Since approximately nobody uses the incompetently run black lists, they don't matter. Unfortunately, using a DNSBL requires equally little expertise, which becomes a problem when an operator wants to shut down a list. When someone sets up a mail server (which we'll call an MTA for Mail Transfer Agent), one of the tasks is to configure the anti-spam features, which invariably involves using DNSBLs. more»

The EFF and Hanlon's Razor

The EFF has just posted a shallower than usual deeplink alleging an "email encryption downgrade attack" by ISPs intent on eavesdropping on their customers. They, along with VPN provider Golden Frog, have additionally complained to the FCC reporting this. Here, they've just noticed something that's common across several hotel / airport wifi networks... more»

Some Observations from NANOG 62

NANOG 62 was held at Baltimore from the 6th to the 9th October. These are my observations on some of the presentations that occurred at this meeting. .. One of the more memorable sides in this presentation was a reference to "map" drawn by Charles Minard in 1869 describing the statistics relating to the Napoleonic military campaign in Russia, and the subsequent retreat. more»

Call for Nominations: M3AAWG J. D. Falk Award Seeks Stewards of a Better Online World

Anyone seeking to honor a groundbreaking contribution toward a better online world should submit a nomination for the 2014 M3AAWG J. D. Falk Award. Presented to people whose work on specific projects made the Internet a safer, more collaborative, more inclusive place, the J. D. Falk Award has recognized leaders and pioneers who saw elements of the online experience that needed improvement and took action to fix them.  more»

Snowshoe Spam: What It Is, and How Not to Look Like You Send It

Have you ever found yourself blocked by a snowshoe spam filter or listed on a snowshoe blacklist? Or perhaps you've been told that one of your mailing practices makes you look like a snowshoe spammer? If so, you're probably wondering what snowshoe spam is, what you're doing to earn this reputation and what you should be doing differently. Here's a brief overview of the history of snowshoe and some suggestions on how to avoid being mistaken for a snowshoe spammer. more»

Fine Grained Mail Filtering With IPv6

One of the hottest topics in the email biz these days (insofar as any topic is hot) is how we will deal with mail on IPv6 networks. On existing IPv4 networks, one of the most effective anti-spam techniques is DNSBLs, blackists (or blocklists) that list IP addresses that send only or mostly spam, or whose owners have stated that they shouldn't be sending mail at all. DNSBLs are among the cheapest of anti-spam techniques since they can be applied to incoming mail connections without having to receive or filter spam. more»

The Naive Arrogance of FUSSPs

Everyone who's been in the e-mail biz long enough knows the term FUSSP, Final Ultimate Solution to the Spam Problem, as described in a checklist from Vern Schryver and a form response that's been floating around the net for a decade. FUSSPs fall into two general categories, bad ideas that won't go away, and reasonable ideas that are oversold. more»

Canada's Anti-Spam Law Coming Into Force July 01, 2014

Canada's Anti-Spam Law, CASL, is now a done deal. Last Thursday, Treasury Board of Canada President (and champion of CASL) Tony Clement approved Industry Canada regulations in their final form. Today, Minister of Industry the Honourable James Moore announced CASL will come into force in July 1, 2014. more»

2014 M3AAWG Mary Litynski Award Nominations Now Being Accepted

In 2010 the Messaging, Malware and Mobile Anti-Abuse Working Group (M3AAWG) and the Internet industry as a whole lost a great friend and supporter, Mary Litynski. Her dedication, excellence, perseverance and tireless work behind the scenes of M3AAWG helped make the organization the success that it is today. Through this award, M3AAWG seeks to bring attention to the remarkable work that is done far from the public eye over a significant period of time... more»